Living area
Total living area of residential and non-residential buildings in 1,000 square metres at the end of a year. Classification: years, region ++ Fortschreibung des Wohngebäude- und Wohnungsbestandes, Gebäude- und Wohnungszählung

Apartments
Apartments in residential and non-residential buildings (number) at the end of a year. Classification: years, region, number of rooms ++ Update of the residential apartment buildings and housing stock, Federal Statistical Office

Non-residential buildings
Non-residential buildings: Buildings, where more than half of the total usable space serves non-residential purposes ++ Update of the residential apartment buildings and housing available